Electric locomotive



A. WALLACE. ELECTRIC LOCQMOTIVE- APPLICATION FILED lAN.'lh1921.

Patented 1m. 28, 1922.

E E T E E H S 3 A. WALLACE.

ELECTRIC LOCOMOUVE. APPLlCATlON HLED IAN. 11.1921.

1,41 1 142. Patented Mar. 28, 1922.

' 3 SHEETS-SHEET 3.

I III/III ALLEN. WALLACE, or MOORES'IOWN, NEW JERSEY, AISSIGNOR TOTHEYBALDWIN LOCO- PATENT OFF-ICE.

MOTIVE WORKS, on PHILADELPHIA, PENNSYLVANIA, A CORPORATION on PENN- 'YsYvANIn. c

Moorestown, New Jersey, .have invented. certain Improvements in ElectricLocomotives, of which the following lea-specificat on.

y invention relates to certain improvementsln electric locomotives ofthe type in which thecab of the locomotive extends over two trucks,which are connected together independently of the cab.

Theobject of the invention 'is to provide a series of side. bearings forthe'cab so arranged that the heavy springs are located at. the pivot ofthe trucks, while the light springs are located at the end ofeach truck,the I light springs "takingthe light loads.

When the load is increased, the springs at.

the pivots take the load.

, This object I attain in the following man ner, reference being hadto-the accompanymg drawings, 1n wh1ch:,

Flg. 1 1s a side VlQW'Of an electric locomo- .tive, illustrating myinvention;

Fig. 2 is a plan: view, showing thetwo trucksin full lines and the cabin dotted, lines, and also illustratin the locomotive passing over acurved trac Fig. 3 is a sectional view on the line 3-3, ig. 2, drawn toan enlarged scale.

ig. a is a sectional view on the line H, Fig. 2; and c Fig. 5 is asectional view on the line 55,

I is the cab 2 are the trucks. frames, as shown, in the trucks are theaxles 3 for the driving Wheels 4. These driving wheels are motor drivenin the ordinary'manner. At the outer end of each true in the presentinstance, is a pivoted pilot truck 5, in which the axles for the wheels6 find their bearing. The trucks are pivoted to the frame of the maintruck at 7. At the innerend of each truck are bearings for the axles oftrailer wheels 8.

It will be understood that the design of the two trucks may vary,according to the type of locomotive desired, and that the number ofdriving wheels'may be increased or diminished without departing from theessential features of the invention.

The two trucks are connected together by a long draw bar 9, in thepresent instance, so

of an electric locomotive. 2, These trucks have side Specification of Iiettersflatent. 1 Applicationfiled January 11, 1921.

' that double elliptical spring 16 andmounted in bearings.

1 ELECTRIC nocomo'rivn,

Patented Mar. 28,1922. Serial No. 436,484. a

each truck is free to accommodate itself to any curves in the track. r

In Fig. 2, for instance, I have shown the locomotive passing around acomparatively sharp curv It will be noticed that the cab of thelocomotive is substantially the same length as the two trucks, and, asthe trucks are pivoted 'to the cab at 10, tlie'cab assumesthe positionllustrated by dotted lines in Fig. 2, as

' the trucks pass around the curve. In order to support the cab properlyonthe trucks, provide side bearings on the transverse center line ofeach vide side bearings at each end of each truck. Theside bearings atthe center line of the truck are much heavier than those at the ends andare for the. purpose of sustaining the heavy loads.- Thedetailconstructionof these bearings is clearly shown in Fig. 3.

The cab 1 has side bearing plates 11 at each side of the centerpivot pin10 and bearing against these side bearing plates are platesl2 carriedbyplungers 13 adapted to openings, in the frame 14, which carries thecenter 'bearing'l5 for the. pivot pin 10. The lower ends of each plunger13 rest upon a mounted on a lower portion 17 of the frame 14 secured tothe side frames 18 of the truck so that the weight of the cab is takenby two sets of elliptical springs as the pivot center of each truck.

7 At the inner end of each truck are two side bearings 19 spaced aapart, as shown in Fig. 5. These side bearingsconsist of casings 20mounted on the cross bar 21 of the truck frames 18. Within each casingis a plunger 22 having a bearing plate 23, which rests against anextended plate 24 on the under side of the cab. A coiled spring 25 islocated in each casing and tends to force the plunger in contact withthe bearing plate 24:. By making the plate extended, the trucks canswing on their pivots without the plungers moving away from theirplates. At the outer end of each truck truck, and I also pro-.

considerable distance that the weight of the cab is taken by structionofthe bearings is similar to the construction of the bearings 19, the onlydif: ference being that they are placed gether, while the others arespaced apart. he bearings 30 are mounted on a cross bar 31 of the sideframes. The particular construction of the center bearings is fully setforth and claimed tion filed by Kenneth Rushton on the eighth day ofJan, 1921, under Serial No. 435,844. a It will be seen by the aboveconstructipln t e heavy springs in line with the pivot center of eachtruck and that any vertical movement on the trucks is absorbed by thesprings at the ends of th trucks so thatthelocomo- 'tive will rideevenly on the rails and the'cab will be properly balanced.

' It will be understood that the cab of an electric locomotive carriesmechanism which is of'considerable weight, so that the cab should besupported on the trucks by the side hearings in order to avoid any unduejars-owing to the movement of the locomotiveover the tracks.

I claim:

1. The combination in an electric locomo-v tive,-oi' two trucks; a cabextending over both trucks; a pivot connecting the cab with the centerofeach truck; side bearing spring members on a line with thecenterpivots; and yielding bearings at the end of'each truck restingagainst the under side of the cab. I

2. The combination in an electric locomotive, of two trucks connectedtogether; a cab extending over both trucks; pivots by which closer toina co-pending applicaranged close toget er and bearing each truck ispi-votally side bearing springs at each side of each pivot; and sprinbearings located ateach end of each truciand bearing under side of thecab, theibear'mglsprings at the center being heavier than t ose at theends of the trucks.

3. The combination in an electric locomo-' tive, of two trucks; a drawbar connecting the trucks; a cab extending over both trucks;

a center pivot by which each truck is conspring within the casingsupporting the plunger, the springs of the center bearings being bearlns. 7

4. Tire combination of twotrucks; a draw bar connecting the trucks; acab extending over both trucks; a center pivot by which each truckisp'ivotally mountedunder the cab; two heavy side bearlng springs at thecenter of'each truck bearing upon the under side of'the cab at each sideof each pivot';"a pair of end bearin springs on each truck arupon theunder side of the cab; and end 'bearin' springs on the inner end of eachtruct spaced "a greater distance apart than the other end bearings andalso bearing against the under side of the cab. r V ALLEN WALLACE.

connected-to the cab;

.40 against the nected to the cab; double elliptical side bearheavierthan the springs of the end

